Effect of using different levels of carbohydrates on some biochemical and histological changes in the liver of common carp (Cyprinus carpio)

Abstract

Abstract:

This study was conducted at Animal Production Department/ College of Agricultural Engineering Sciences / University of Baghdad/ Al-Jadiriyia. From September to November 2018. Twelve glass aquaria with dimensions of 40 cm × 30cm × 30 cm were occupied by 60 common carp fish ( 18± 1 gm mean weight ) randomly distributed into six treatments with replicates ( 5 individuals / replicate ) . Fish fed 3 % of body weight with six laboratorial made diets (1.5mm diameter) supplemented with different percentages of broken rice ( 0 , 15 , 30 , 45 ,60 and 75 % ) with a crude protein ranged  21.15 % - 25.40 %  and 47.28 % - 61.09 % carbohydrates. The results of biochemical blood serum tests showed that the T6 treatment was superior in glucose concentration, 162.50 mg/100 ml, while the T1 treatment recorded the highest insulin concentration, amounting to 13.80 mg/IU. Meanwhile, the results of the histological examinations of the fish liver showed the occurrence of bleeding, expansion of the liver sinusoids, and watery degeneration. In transactions T4, T5 and T6.